<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="root">
        <input type="text" v-model="user.name">
        {{user.name}}
    </div>
    <script src="./js/mvvm.js"></script>
    <script>
        let vm = new Mvvm({
            el:'#root',
            data:{
                user:{
                    name:'lili'
                }
            }
        })
    </script>
</body>
</html>